Meta released its first AI coding agent, Muse Code, on August 5, entering a market already dominated by Anthropic's Claude Code and OpenAI's Codex. CEO Mark Zuckerberg described it as "a terminal coding agent that takes on complete software engineering tasks across large repos: planning changes, writing code, validating the results."
The tool is powered by Muse Spark 1.2, an updated version of Meta's proprietary coding model, and coordinates persistent background subagents that build context over time. It ships with a local event log for crash recovery and task resumption, plus one-line installation. Pricing is set at $1.25 per million input tokens and $4.25 per million output tokens, with a contributor tier priced at roughly $0.30 per million tokens -- more than 10 times cheaper -- to undercut rivals.
The launch comes as Meta faces mounting pressure to monetize its heavy AI spending. It also intensifies a broader industry scramble for coding talent and tooling: OpenAI is acquiring startup Ona to expand Codex, while Google is reportedly in talks with coding startup Mechanize.